摘要
凸极定转子结构及开关电源供电方式使得无轴承开关磁阻电机(BSRM)存在较大的电磁振动问题。混合定子齿无轴承开关磁阻电机可实现转矩和悬浮力之间的解耦,从而简化数学建模和控制策略。本文基于一12/14混合结构BSRM,研究了混合定子齿BSRM的定子振动特性。介绍了悬浮运行原理,分析了径向电磁力特性,运用了有限元法对电机进行了模态分析,并且建立了系统振动仿真模型,然后通过和传统BSRM进行对比,综合分析了混合定子齿BSRM的振动特性。
The Bearingless Switched Reluctance Motor（BSRM） features severe magnetic vibrations because of the double-salient structure and power supply in switching mode. BSRM with hybrid stator poles can effec- tively achieve the decoupling between the torque and levitation force so as to simplify the derivation of mathe- matical model and motor control. The paper dealed with the stator vibration characteristics of a novel BSRM with 12/14 pole structure, in which the stator poles were designed in unequal dimensions. To better under- stand the novel motor, the suspending principle and radial force were studied in this paper and modal analy- sis was conducted by FEM at the same time. Finally, the vibration characteristic of novel BSRM was ana- lyzed by the comparison with conventional 12/8 BSRM in simulink.
出处
《微电机》
2017年第4期11-16,共6页
Micromotors
基金
国家自然科学基金(51207073)
关键词
BSRM
径向力
模态分析
电磁振动
BSRM
radical force
natural frequency
electromagnetic vibration
